Fiber evidence

Which of the following are ways to collect fiber evidence?

• vacuuming

• adhesive tape

• dusting

• forceps

• burning

Check all descriptions appropriate for: Polyester

• Synthetic

• Natural

• Plant

• Animal

• Mineral

Tags

NGSS.MS-PS1-3

A flexible, flat material made by interlacing yarns (or “threads”)

• monomer

• yarn

• fiber

• textile

Scientists use this test to analyze the dyes in fabric evidence:

• Stain test
• Solvent test
• Infrared Spectroscopy
• Chromatography

Fibers are considered what kind of evidence? 

• Individual
• Class
• Direct
• Indirect

Which of the answers describe natural fibers?

• rayon, nylon, wool

• cotton, polyester, cashmere

• linen, cotton, silk

• silk, spandex, polyester

What is the thickness and shape of synthetic fibers?

• thinner than natural fibers and spiky on the surface

• thicker than natural fibers and flat

• as thick as natural fibers and round

• it can be manufactured with any thickness and shape

Tags

NGSS.MS-PS1-3

When fibers are transferred directly from victim to suspect or suspect to victim, this is called:

• necessary transfer.
• direct transfer
• absolute transfer.
• None of these choices.

secondary transfer

• The transfer of evidence such as a fiber from a source (such as a carpet) to a person (suspect), and then to another person (victim)
• the passing of evidence, such as fiber, from victim to suspect or vice versa
• things like clothing, carpets, and upholstery
• fibers that have been spun together

This comes from a seedpod of a plant. It is the most common plant fiber used in textiles

• Coir

• Cotton

• Flax

• Hemp